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用冷挤压方法加工圆锥滚子动模凹穴是一种比较先进的工艺方法,用这种方法加工出的动模凹穴与用车削方法加工出的动模凹穴相比,表面光洁度可提高1～2大级,加工效率可提高30倍左右,冲压大端直径为中φ6.5～φ10毫米或大端直径大于10～13毫米的滚子时,动模的寿命均可提高一倍。文内就冷挤压凹穴用的模具和设备、冷挤压过程中动模毛坯的形变,冷挤压时的润滑、动模毛坯的制备、动模毛坯外径的确定、冲头的设计和加工、挤压力的计算、加工硬化和残余应力以及冷挤压动模凹穴的效果等方面做了较详细的阐述,附图11幅,表4个。
Cold extrusion method of processing taper roller dynamic mold cavity is a more advanced technology methods, using this method to create a dynamic mold cavity and the use of turning method of machining cavity, the surface finish can be Increase 1 ~ 2 big class, processing efficiency can be increased by about 30 times, stamping large end diameter of φ6.5 ~ φ10 mm or big end diameter greater than 10 ~ 13 mm of the roller, the life of the dynamic mode can be doubled . The text on the cold extrusion cavity with the mold and equipment, cold extrusion process of dynamic deformation of the blank, cold extrusion lubrication, the preparation of dynamic mold blank, dynamic blank blank diameter determination, the punch design And processing, calculation of extrusion pressure, work hardening and residual stress as well as the effect of cold extrusion cavity cavity made a more detailed description, Figure 11, Table 4.